There is no lack of forums on photography on the web. Excellent forums, however, do not abound -- Luminous -Landscape is one of the few. I find that this site and most contributors offer unparalleled findings, comments and advice. One does not need to be solely a landscape photographer to benefit from reading and occasionally posting a comment. There is no need to always pigeon-hole the type of photography one does: I have a lecture on Canadian Portraitists that include William Notman, Yousuf Karsh, V. Tony Hauser, Edward Burtynsky, Ken Lum, and Andrzej Maciejewski, not all of whom fit that particular pigeon-hole.
Jean-Michel